Bogwood is a Wood preserved in a bog due to anaerobic conditions. The extremely low oxygen conditions of the bog protect the wood from normal decay, while the underlying peat provides acidic conditions where iron salts and other minerals react with the tannins in the wood, gradually giving it a distinct dark brown to almost black color.
Bog oak wood ages for thousands of years without oxygen and light in the river mud, swamp or gravel. through the time it gains unique strength and coloring. the process of creating bog oak can be compared to geological transformations when the coal becomes a diamond. wood extraction from the riverbed is extremely laborious and complex and black oak resources are limited.